Machine for scouring cereals.



G. Ii. FRIEDRICH.

MACHINE FOR SCOUHING CEREALS.

APPLICATION FILED AuG.5. I9Ia.

Patented Jan. 2l, 1919.

dummen,

GUSTAV E. FRIEDRICH, 0F GRAND RAPIDS, MICHIGAN.

MACHINE FOR SCOURING CEREALS.

Specication of Letters Patent.

Patented J an. 21, 1919.

Application filed August 5, 1918. Serial No. 248,478.

To all whom t may concern.'

. Be it known that I, GUs'rAv E. FRIED- RICH, aA citizen of the UnitedStates, residing atjGrand.Rapids,in the county of Kent and State ofMichigan, have invented certain new and useful Improvements in Machinesfor Scouring Cereals, of which the following is a specification.

My invention relates to improvements in implements for scouring wheatand other cereals, and its objects are: first, to provide for removingany smut, mold or other unsanitary microbes from the wheat or such othercereal as may beunder treatment. Second, to provide a means whereby thescouring element may be used and re-used any desired number of times,and successively. Third, to provide a means whereby all microbes takenfrom the cereal under treatment will be absolutely removed and carried0H during the process of scouring, and

fourth, to provide a means whereby every vestige of the scouringelement, as well as the foreign matter removed will be absolutelyseparated from the cereal.

I attain these objects by the mechanism illustrated in the accompanyingdrawing, in which Figure 1 is a front elevation of the machine. Fig. 2is a side elevation of the same. Fig. 3 is a sectional plan on the line3-3 of Fig. 2. Fig. 4 is a plan of the machine. Fig. 5 is a backelevation showing the relative positions of the several driving elementsof the machine, and, also, showing the hopper and scouring boxes insection on line 5--5 of Fig. 4, to show the several elements that aremore directly connected with the scouring process. Fig. 6 is a detachedelevation of the two scouring plates. Fig. 7 is a sectional end view ofthe sieve boxes, sieves and sand removing board. Fig. 8 is a. sectionalside elevation of the sand removing board and spout, and Fig. 9 is aplan of one of the grain sieves.

Similar reference characters indicate similar parts throughout theseveral views.

The construction of this machine requires the use of a supporting frame1, a hopper 2 and scouring boxes 3. The scouring boxes 3 are supportedupon the girts 4 of .the frame 1 by means of rods 6 that are made toslide freely in their bearings on said girts so the boxes 3 may be madeto reciprocate horizontally, in opposite directions by means of theeccentrics and .connections shown at 25, connecting the main shaft 2Owith the scouring boxes 3 so each box will move independently of theother, and always in the opposite direction. 12 shows the driving,"andthe loose pulley on the driving shaft 20, which are of such common usein like connections as to require no further description here.

'Ihe hopper 2 is divided by a partition a into two compartments, c andd. The compartment cl is for the rece tion of a properly clarified andsterilize scouring element, as sand, and is provided with a gate or trapb that may be so pivoted to the hopper, at f, that the end g may beplaced close to, or removed from the partition a to increase or diminishthe flow of the scouring element over the gate and through the opening eto the scouring plates 24. The grain enters into the compartment c ofthe hopper and iows, with the scouring element, through the opening ebetween the scouring plates 24. The plates 24 are pivotally mounted uponthe supporting rods 6 in the scouring boxes 3 and may be adjusted toincrease or diminish the distance between their lower ends, by means ofadjusting screws 14, and are made to reciprocate horiz ontally with saidboxes, in opposite directions, so the wheat, or other cereal,and thesand or other scouring element will be made to intermingle, backward andforward, so constantly and thoroughly that every particle of the surfaceof the cereal, including the .grooves in wheat, barley, rye, and othergrains will be thoroughly scoured, and all foreign matter absolutelyremoved. The scouring plates 24 are serrated, as indicated in Fig. 6, insuch a manner that the serrations will lie in opposite directions toinsure the perfect distribution of the cereals and scouring elementsover the entire surfaces of the plates. The discharge opening below theplates may be regulated by means of the gates 19 actuated by the screws15. The said gate b is actuated by the screw 13.

The s( niring element is stored, in small quantities, in the elevatorshaft 7 whence it is carried upward and discharged into the spout 17 andinto its compartment of the hopper, whence it passes through between thescouring plates 24, and, with the cereal, onto the upper surface of theupper sieve 27, whence the scouring element passes directly through bothsieves and into the receiving hopper 8, and through the spout 9 backinto the lower end of the elevator shaft to be iio again taken up andcarried back into the hopper 2, thus working. 'the same scouring.element continuously and repeatedly as the cereal is passed through themachine'. The elevator is operated by the belt 29, from the pulley 28 onthe main shaft 20, over the pulley 28, in the usual way. As this form ofelevator is common, well known, and does not really form an element ofinvention at this date, 1 do not deem it necessary tofenter further intodetails of construction or operation. rlhe sieve holder 5 isA suspendedfrom the lower girts 4 by means of springs 10, in such a manner thatthey may be made to reciprocate horizontally to thoroughly sieve theparticles of scouring material, and remove bacteria after the cereal hasbeen properly scoured and before the cereal has beendischarged from themachine. Thehacteria or smut, rust, mold and other foreign matter isremoved from the si'eves'v by meansl of a blower 1S sucking said foreignmatter l"through the conductor pipe 16, the blower 18 being driven fromthe counter shaft 22 by means of the belt 23, in the usual manner, thecounter shaft 2Q being driven by the belt 21, from the main shaft 20.The oscillating, or horizontally reciprocating movement of thesieves,and the sand hopper 84-9 Ais produced by means of an eccentric 26on the .counter shaft 22. This movement is given to insure the propermovement ofthe cereal, 11, over, and of the sand' l1 through the sieves27. 112, in Fig. a, represents the discharge of smut, &c., from theblower 18.

rlhe removal of the scoured cereals from the machine may be provided forby any of the well known means provided in this class of machines, as,for instance, by the use of a sieve 30 and a discharge spout 31, soarranged that when the cereal has passed over the sieves 27 and thescouring element and refuse have been disposed of the cereal will bemade to pass out of the machine, thoroughly cleaned, over the spout orplate 31 into any desired receptacle. I give this simply as an availablemeans, but not as an essential means for bringing about this necessaryresult.

What 1 claim as new in the art, is:

1. In a machine for scouring cereals, a supporting frame, a hoppermounted on said trame, means for mixing scouring material with thecereal as they fall from the hopper means below the hopper forintermingling the' cereal with the scouring material and discharging it,means below the scouring mechanism for receiving the dischargetherefrom, means for separatingthe cereal, the scouringvmaterial andtheforeign matter, means for returning the separated scouring material backinto the hopper.

2. In a cereal scouring machine, a supporting'. frame, a cereal hopper,a pair of Vvertically disposed scouring plates with their adjacentsurfaces transversely grooved, means for alternately reciprocating saidplates horizontally, means for adjusting the relative positions of saidplates, means below said plates for receiving and separating thematerial that passes between them, means for, mingling thel cereal with,scouring mal terial when passing. between the plates, and means forcarrying the sc'ou'ringl mate back into the hopper to againinterni'ingle itl with the cereal to be scoured.

3'. ln combinatinf a supporting frame, al cereal hopper mounted upon'said" frame', means for mixing` a scouring material with the cereal asthey pass from the h'oppjea pair of vertically disposed scouring plateshaving their adjacent surfaces transversely grooved, means for Caiisingsaid plates to reciprocate hori'z'enta'l'ly' withl alternate movement,niea'nsb'e'gl'ow the plates for sepa'- rating the cereal, the securing'element and the foreign matter, and for' carrying the scouring materialback into the' hopper, and means for adj'usting'the' sce'uring plates t`ward andl fromI each otherl ,j l Y 4. In combination with the" spportingframe' and the hopper 'ofaA cereal' scoiiring machine, verticallydisposed scouring plates having the adjacent surfaces transverselygrooved, means for oarrying` scoi'irin'g m'aterial into the hopper andmining itl with the cereal as v`they pass out of thc hopper, means foralternately' moving=- said plates horizontally, means for adjusting theArelative positions of the plates, means for adjusting the' dischargefrom between" the plates, means below the plates` forfy separating theCereal, thel scourng" material' and the foreign matter, means forv4retnrning the scoiring" matter back into the hopper;

5. In combination with the supporting frame and the'hopper of acer'ealjscouring machine, pl ate boxes" mounted' in the" frame,vertically disposed scouring' plates mounted in said boxes below theyhopper, said"v plates having transversely disposed grooves in theiradjacent surfaces7 means' for giving saidl Plates and boies alternatehorizontal reciprocating movements, means for adjusting the relativepositions of the plates, means for adjustingv the discharge of cerealand scouring material from between the plates, and meansl forseparating. thecereal, the scouring material andthe foreign Inatter, andfor carrying'` the scouring material back into the hopper continuously;

Signed at Grand Rapids, Michigan, July 26,1918. GUSTAN' n. FRIEDRICH:

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner oyatentt;

Washington, D. G.

